Rollerskate



FIG. 1 is a right side elevational view of a roller skate showing my new design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a top plan view thereof. 

The ornamental design for a rollerskate, as shown. 